西南石油大学学报(自然科学版) ›› 2008, Vol. 30 ›› Issue (5): 141-144.DOI: 10.3863/j.issn.1000-2634.2008.05.033

• 油气化学工程与化工 • 上一篇    下一篇

复合射孔压裂火药爆燃后气液作用分析

赵旭 柳贡慧 李中权   

  1. 中国石油大学石油工程教育部重点实验室,北京102249
  • 收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2008-10-20 发布日期:2008-10-20

HIGH ENERGY GAS AND CONTROL LIQUID ACTION CHARACTERISTICS AFTER DEFLAGRATION IN COMPLEX PERFORATION PROCESSING

ZHAO Xu LIU Gong-hui LI Zhong-quan   

  1. CMOE Key Laboratory of Petroleum Engineering,China University of Petroleum,Beijing 102249,China
  • Received:1900-01-01 Revised:1900-01-01 Online:2008-10-20 Published:2008-10-20

摘要:

针对目前在复合射孔理论模型的研究中,国内外各石油公司及相关研究机构主要集中在火药的爆燃机理、岩石的压裂机理和裂缝的生成方面,但对于压裂火药燃烧结束后剩余高能气体及上部

压井液体的水击压力对地层的作用研究较少的问题,研究了复合射孔过程中压裂火药爆燃结束后压井液及爆生气体对地层的作用特性,推导了高能气体作用下的压井液体的运动微分方程,提出了一

个火药爆燃结束后井底压力的计算方法,分别对复合射孔作业过程中产生的井底压力变化、压井液体的水击作用、对地层的脉冲作用等几个方面的问题进行了较为全面的研究。计算实例分析表明,

压井液的水击及爆生气体的脉动作用对复合射孔的作用效果有积极的作用。

关键词: 压井液, 气液作用, 爆生气体, 脉动作用, 计算模型

Abstract: In the theoretical model research on complex perforation,domestic and international oil companies and relevant research institutions mainly place their concentration on deflagrate mechanism,fracturing mechanism of rock and formulation of the crack,however,the research on effect of surplus high energy gas and water hammer of control fluid is inadequate.The function characters of high energy gas and water hammer of control fluid after fracturing charge are studied and the motion differential equation derived in this paper,a mathematical model for evaluating bottom hole pressure is proposed,the change of wellbore pressure comprehensively studied,slug of control fluid,pulse action of high energy gas and water hammer after fracturing charge are studied in detail.Last,through an example computation,it is proved that water hammer of control fluid and pulse action of surplus high energy gas have positive function on the effect of complex perforation.

Key words: control fluid, gasliquid interaction, high energy gas, pulse action, mathematical model

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